Lead-joint runner



A J. T. CLARK 1,712,199

LED'JOINT RUNNER Filed sept. 14, 192e Patented May 7, 1929.

narran stares ignite JOHN T. Oriani; or en roaeo, inmnors.

nnen-JOINT RUNNER.

' Application filed September 14, 1926. Serial 1\'io`l 135A?? My invention relates to the class of devices used in forming the oint in a soil pipe or the like, where molten lead is poured into the annular space between the spigot and bell of the two adjoining pipes. in this Vtij/'pe of joints, a rope or flexible packing belt is tightly clamped about the spigot end of. a pipo sec tion and close to the bell end of the adj acont pipe section. The position of the rope or belt is such as to leave an opening in which the lead is poured,and it is one object 0f this invention to provide an improved rope or b elt which will seal the entrance to the joint against diversion or leakage of the molten metal away from the joint.

A further object of the invention is to incorporate a clamp for the rope or belt which permits a quick mountingupon, and tightening` about the pipe. Y

Another object of the invention is to embody in the device a sealing element which adjusts itself to pipes of different diameters within the customary limits.Y

A final, but nevertheless important object of the invention is to construct the same of few and simple parts, in order that it may be inexpensively manufactured and easily handled by those skilled in the art.

With the above objects in view, and any others which may suggest themselves from the specification and claims to follow, a better understanding of the invention may be gained by reference to the accompanyingdrawing, in which- Figure 1 is a plan view of my improved joint runner as mounted on a pipe joint, a portion of the view being broken away;

Figure 2 is an elevation of the device as applied, part-ly in section; and

Figure 3 is a fragmental section on the line 3 3 of Figure 2, portions of the runner being broken away to expose the scaling clement previously referred to.

Referring specifically to the drawing, the

' numeral 5 denotes the bell-end and 6 the spigot-end of the pipe sections joined. rilie packing rope 7 is usually of asbestos or other fire-resisting material, and is looped around the pipey 6 and at the same time positioned to abut the bell 5L of the section 5 whereby to seal the annular opening thereof all around eX- cept at the top, where the rope sect-ions meet, leaving a triangular opening 8 where the lead is poured.

In departing from the site of the joint, the packing rope sections 7 pass through the jaws 9 and 9a offa drum-shaped clamp. The latter is made in solid or block form, yet of aluminum .or other' light metal for'lf'acility in handling, and its tendency to hold to the rope when carried or laid around.

side by side, and operate on a shackle 11,se

cured outside the jaws 10 by nuts 12. The

crown of the shackle receives aneccentric roller 13, elongated at 13a to provide a handle. l

iin the position shown, the roller has `tightened thejaws on the packing rope sections, but the grip on these may be loosened by swinging the roller to the right, as viewed in Figure 1 The lower legof the shackle 11 receives loosely between the clamp jaws an eye k14 of strong wire, the stem of the eye being embedded in a shield 15 of material similarto that from which the packing rope is made. The shield is arch-shaped, tapers toward its ends, and is capable of flexing upon pressure to alter itscurvature to conform tothe conditions under which the pressure is exerted. Thus, when thepacking rope is applied as shown, the sheild 15 is positioned under the tuin or bend of the rope sections leading from as the rope sections are drawn up for tightening in the clamp, the shield is packed snugly between them andthe pipe section 6 Vso as to form a sealed barrier for any molten metal j 'zov .the pipe-encircling loop into the clamp, and

The recess 10 between the clamp jaws 9 l l and 9 has a branch 10a which provides clearancefor the free movement ofthe shield eye and this recess is iiared in the direct-ion of the shield, as indicated at' 10b, to permit the shield to drop away from the rope when the device has been removed from the pipe, leaving the rope free for handling or adjustment. Prior to the use of the device, one section of the rope carries the clamp in loose condition, so that only the other section need be passed through the clamp when the device has been applied to the pipe. To facilitate the insertion of the rope sections into the clamp jaws, the rope ends `may be iitted with thiinbles 16 of metal, these preventing and breaking away.

ylet even when the'jaws are closely gathered;

A device is thus had which is simple in con-` struction, easy to apply and eicientin use. The preferred form of the invention has been illustrated and described, but it will be obvious that some minor changes orrenelnents may be made during the dprocess of itscoininercial development without, however', departing from the principle of the invention; and it is my intention to include such changes and refinements as coming within the scope and spirit of the appended claims.

' I .elaiinz-V s 1. Means for sealing a lead-joint runner for pipes in which a heat-resisting packing rope is looped about the pipe and gathered` c over the saine to extendin a lateral direction,

and a clamp used tosecure the rope extenbe inserted between the rope and pipe in the hollow formed between the loop and the ext-ion,afcla1np used to secure the rope extensions,v and a clainp section extended under the latter g .comprising va heat-resisting shield adapted to be inserted between the rope and the pipe in the hollow formed between the` loop and theextension thereof, and a stein projecting from the shield andv linked to said clamp section. l v A In testimony whereoil I affix my signature.

`JOHN T. CLARK. 

